<template>
  <div class="shopcar-container">
    <div class="goos-list">

      <!-- 商品列表项区域 -->
      <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						
            <mt-switch 
              v-model="$store.getters.getGoodsSelected[item.id]"
              @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"></mt-switch>
            <img :src="item.thumb_path" alt="">
            <div class="info">
              <h1>{{ item.title }}</h1>
              <p>
                <span class="price">¥{{ item.sell_price }}</span>
                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                <!-- 问题:如何从购物车中获取商品的数量 -->
                <!-- 1. 我们可以先创建一个空对象,然后循环购物车中所有的商品的数据,把 当前循环这条商品的ID ,作为对象的属性名,count 值作为对象 的属性值,这样,当把所有商品循环一遍,就会得到一个对象: {88:2,89:1,90:4} -->
                <a href="#" @click.prevent="remove(item.id, i)">删除</a>
              </p>
            </div>

					</div>
				</div>
			</div>
    </div>

      <!-- 结算区域 -->
      <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner jiesuan">
						<div class="left">
              <p>总计(不含运费)</p>
              <p>以勾选商品 <span class="red">{{ $store.getters.getGoodsCountAndAmount.count }}</span> 件, 总价 <span class="red">¥ {{ $store.getters.getGoodsCountAndAmount.amount }}</span></p>
            </div>
            <mt-button type="danger">去结算</mt-button>
					</div>
				</div>
			</div>

      <p>{{ $store.getters.getGoodsSelected }}</p>

  </div>
</template>

<script>
import numbox from '../subcomponents/shopcar_numbox.vue'


export default {
  data() {
    return {
      goodslist: [] //购物车中所有商品的数据
    }
  }, 
  created() {
this.getGoodsList()
  },
  methods: {
    getGoodsList(){
      //1. 获取到 store 中的所有商品的ID,然后拼接出一个 用逗号分割的字符串
      var idArr=[]
      this.$store.state.car.forEach(item =>idArr.push(item.id));
      //如果购物车中没有商品,则直接返回,不需要请求数据接口,否则会报错
      if(idArr.length<=0){
        return
      }
      //获取购物车商品列表
      this.$http.get('api/goods/getshopcarlist/'+idArr.join(",")).then(result=>{
        if(result.body.status===0){
          this.goodslist=result.body.message;
        }
      })
    },
    remove(id,index){
      //点击删除,把商品从store 中根据传递的ID删除,同时,把当前组件中的goodlist中,对应要删除的那个商品,使用index 来删除
      this.goodslist.splice(index,1);
      this.$store.commit('removeFormCar',id)
    },
    selectedChanged(id,val){
      //每当点击开关,把最新的 开关状态,同步到store 中
      console.log(id+"---"+val)
      this.$store.commit('updateGoodsSelected',{id,selected:val})
    }
  },
  components:{
    numbox
  }
}
</script>

<style lang="scss" scoped>
.shopcar-container{
  background-color: #eee;
  overflow: hidden;
  .goos-list{
    .mui-card-content-inner{
      display: flex;
      align-items: center;
    }
    img{
      width: 60px;
      height: 60px;
    }
    h1{
      font-size: 13px;
    }
    .info{
      display: flex;
      flex-direction: column;
      .price{
        color: red;
        font-weight: bold;
      }
    }
  }
  .jiesuan{
    display: flex;
    justify-content: space-between;
    align-items: center;
    .red{
      color: red;
      font-size: 16px;
      font-weight: bold;
    }
  }
}
</style>